Drilling machine



H. W. SCHATZ AND A. M. 808A.

DRILLING MACHINE. APPLI CATION FILED SEPT. 10. 1917.

Patanted Apr. 25, 1922.

2 SHtETS-SHEET l- H. W. SCHATZ AND A. M.'SOSA.

DRILLING MACHINE. APPLICATION min SEPT. 10. 191-7.

Pz ztonted Apr. 25, 1922.

2 SHEETS-SHEET 2- Mill 91 10 1Q I n w M (f y /7 1mm err.

HERMAN w. SCHATZ OF Nortwoon;Ann eneusrnsn. sosA,--or CINCINNATL onto} f'Assrenon's TO THE AMERICAN TOOL WORKS 'GOMPANY, or orn'cnvnnrr, onmfe"CORRORATION OF OHIO.

DRILLING MACHINE. V

'Specification of Letters latent. ea td 5, 1 22,

Application"filedseptember. 10,1 917. Serial name-552.-

T 0 all whom it may concern:

:Be it known that we, HERMAN V. SoHArz and AUGUSTUS M. SosA, citizens ofthe United States, residing, respectively, at Norwood and at Cincinnati,in the county of Hamilton and State of Ohio, have jointly inventedcertain new and useful Improve,- ments in Drilling Machines, of whichthe following is atspeoification. r

Our invention relates to'drilling machines employing meansfor raisingand lowering the drill-arm on the column or standard It is the object ofour invention to provide a drilling machine with an electric motormounted on the drill-arm, and arranged for causing operation of theraisingand lowering means for the drill-arm ;and, further to provide anarrangementof means whereby the drill-spindle maybe. operated and theraising .and lowering of the drillearm beef-J fected by means of asingle electric motor supported by a movable drill-arm.-

The invention will be further readily understood from the following.descrlptlon and claims, and from the'drawlngs, in which latter F 1 is arear elevation of a radial drill.-

ing machine embodying the invention, parts.

being broken away. n Fig. 2 is a plan View of the same, partly inhorizontal section on the'line 2-2 of Fig.1. V Fig. 3 is a plan View ofour improved def vice, partly broken away, and with the gearcoverat thetop-of the column removed. Fig. 4 isaa vertical cross-section. of thesame taken on the irregular line 4l-4 of .Fig. 5 isa vertical sectionaldetail, taken on the line 5-5 of Fig. 2. i

Fig. 6 is a vertical sectional detail, taken on thefline 66of Fig. 2.Fig. 7 is a detailin cross-section, on the line 7 of Fig-3; and, p l

Fig. 8 is a detail in vertical secti0n,taken taken on the line 8-8 ofFig.2.

In the presentexemplification of the in;

vention, a radial drilling machine isshown. The drilling machineexemplifiedcomprisesh the column;

a base 11, fron1 which a-post 12*extendsvertically, a column 13, shownas: a rotary cola umn, being rotatable about the post in usual or .suitable mannen and arranged to be to the base by means ofthe usualclamp, stancedat 14:. A drillarm l6;hasa bearing 17 about the column,the bearing being ar- 7' ranged to be raised and lowered-to suitableinstance, by means he bearing. isarranged to be I An operating shaft 26for operating the;

drill-spindle extends lengthwise of the dril I arm. ,Suitableoperatingmeans for driving and feeding the drill-spindle are. mounted on thetool-slide, and have operativeconneo tion-with the operating shaft.These oper- ,at ngmeans may. bei'of @any; usual or orjd-inaryconstruction, andmay include a pair of bevel-gears 27 28, havingsuitable"splineconnection 29 withv the operating shaft,suitableclu'tches' operated by a shifting-lever 30, being arranged tov.operatively connect a bevel-gear 36. 1 selectivel-y-v through either ofsaid bevel-gears. 27,28, with the operating shaft, forselectivelyrotating the bevel-gear 36 in reverse directions, the'latter beingconnected ,with a trainiof gearing, 37 'foroperating thedri-lLspindle. iThe means for raising [and lowering the drill-arm on the column areexemplified as a screw-0d 4:1, ...exter'1ding lengthwiseof the column,with which a nut 42 has threaded engagement. The inuti's exemplified aslocated in a; recess 43 of a lugll on the drillindicated at a-rm,.aledge 4,5 of. thedatter having sup.-

port on said nut,- asetL-screWAG preventing rotation of the nut- 'Thelower end of the screw-rod is journalejd in a bearing 47 in the lowerpart of the column, and the upper end of thescreW-rodis journaled in abearing 48 of a cap .49- secured'tothe upper end of A bracket .51extendsfromi the drillearm bearing '17. at that side of said bearing Op-.resQitth6sid th r rQm. hic t dr l clamped.in.adj s ed-postings with.relatiee .lfi .prejects.-x lelciiriermWrB?is i i supported by saidbracket, being exemplified as secured thereto by bolts 53. Thearmature-shaft 54 of the electric motor has a pinion 55 fast there-on,which meshes with a gear 56.

A gear-support 61 is secured to the bracket, as by means of bolts 62.The gearsupport forms an oil-cap which is arranged to contain a body ofoil in which the pinion 55 and gear 56 are received. The gearsupport hasa bearing 63 thereon for the armature-shaft 54 of the electric motor.

Bearings 64 are located on the gear-support and have a sleeve 65journaled therein, the gear 56 being secured to said sleeve, as by a key67. Eiaid sleeve also has a bevelgear 68 thereon. The sleeve isexemplified as an extended-hub of said bevel-gear. The sleeve receivesthe end of the operating shaft 26, which is fixed thereto so as torotate therewith, by means of a key 69.

The bevel-gear 68 meshes with a bevelgear 71, which has fixed therewitha spurgear 72, as by having the spur-gear received about the hub 73 ofthe'bevel-gear 71, a key 74 fixedly connecting the gears. The bevelgear71 and spur-gear 72 are ijournaled about a stud-shaft in a bearing 77 ona lug 78 extending from the gear-support.

The spur-gear 72 meshes with a spur-gear 79 which has a hub 80 journaledin a hearing 81 in said lug of the gear-support, a collar 82 fixed tosaid hub, for instance, by a set-screw 83, acting with the gear 79 tohold said hub lengthwise to said bearing 81 for compelling movements ofthe gear 79 with the drill-arm.

An upright shaft 86 extends lengthwise of the column and is journale-dat its lower end in a bearing87 on the rotatable column and is journaledat its upper end in a bearconnection 89 with said upright shaft 86 forrotating said upright shaft throughout the adjustments to the variouselevations into which the drill-arm may be positioned. The shaft 86 hasa gear 91 fixed thereto. lhe gear 91 meshes with a gear 92 fixed with agear 93 to rotate about a stud-shaft 94, secured in a bearing 95 in thecap 49, asby meansof a set-screw 96. The gears 92, 93, are fixedtogether, as by a key97, and are held on the stud-shaft by a washer 98and nut 99, the washer impinging a shoulder 100 on said shaft. V Thegear 92 meshes with the gear 1.01, which is fixed to a gear 102, as by'akey 103. The gears 101, 102, rotate about a studshaft'104, fixed in abearing 105, as by clamping said shaft in said bearing between ashoulder 106 on said shaft anda clampnut 107. Gears 101, 102, are heldon said stud-shaft by means of a washer 108 and a nut 109 clamping saidwasher against a 75, fixed by a set-bolt 76 ing 88 in the cap 49. Thegear 79 has spline-- shoulder 110 on said shaft, permitting said gearsto rotate between said washer and the bearing 105. j

A rocker-lever 112 is journaled about a journal-extension 113 of thebearing 48 at the upper end of the screw-rod. The screwrod has a gear114 fixed at its upper end. collar 115 about the screw-shaft under thebearing 48 is fixed to the screw-shaft. The pivotal axis of therocker-lever and the axes of rotation of the are coincident. Therocker-lever has a pinion 117 journaled about a stud-shaft 118 secured.to the arm 119 of the rocker-lever. The rocker-lever is arranged to havelateral. motion imparted thereto, accomplished by providing the arm 120thereof with a segment-rack 121' engaged by asegmentrack 122 secured tothe upper end of a rockshaft 123, extending lengthwise of the column,and journaled at its upper end in a bearing 124 on the cap 49, and atits lower end in a suitable bearing 125 adjacent the lower end of thecolumn. The rock-shaft is provided with a handle 126 by means of whichthe rocker-lever 112 is moved from side to side.

Upon the lateral movement of the rockerlever, he pinion 117 is caused toselectively mesh with the gear 93 or the gear 102 depending on thedirection of movement of the rocker-lever, the gears 93, 102, rotatingin opposite the gear 116 selectively in opposite directions forimparting similar selective directions of rotation to the screw-rod 41.When the pinion is in intermediate position and out of'mesh with bothgears 93, 102, the screw-rod is non-rotating. The gears 93, 102, act asdriving gears rotating in opposite directions for rotating the screw-rodin opposite directions upon selective engagement of the pinion with saidrespective gears 93, 102. V

In order to control the meshing relation of the pinion 117 with thegears 93, 102, stops 127 exemplified as bolts are arranged to coact withstop-faces 128 on the cap 49, the said bolts being axially adjustable inlugs 129 extending from the segment-rack 122, the bolts being tions bymeans of nuts 130.

By means of our improved device a single electric motor, supporteddirectly by the drill-arm, is arranged to operate both the means foroperating the drill-spindle and the raising and lowering means of thedrill-arm, by means direct connected. with. both said means, forming acompact and simple structure.

If desired a speed controller or commutator, exemplified at 131, forcontrolling the speeds of the electric motor, may be mounted on thedrill-arm, cured to the motor-frame by screws screw-rod and gear 114.

directions, and thereby rotating I fixed in adjusted posi- 7 beingexemplified as se 7 iso 1,413,790 I v I '3 Having thus fully describedour invention, what we claim as new and desire to secure by LettersPatent, is:

1. In a drilling machine, the combination of an upright post, an uprightcolumn journaled in upright relation about said post, a drill-armstructure including a drill-arm, means for rotatively adjusting saidcolumn about said post, a screw-rod having connection with saiddrill-arm structure for adj ust ing the latter to elevation on saidcolumn, a shaft extending up and down having operative connection withsaid screw-rod, and an electric motor supported by said drill-armstructure movable up and down and to radial positions with saiddrill-arm structure and having operative connection with said shaft forrotating the same during adjustments to elevation of said drill-armstructure.

2. In a drilling machine, the combination of an upright post, an uprightcolumn rotatable in upright position about said post, a drill-armstructure including a drill-arm adjustable up and down on said column,means for adjusting said drill-arm structure with said column about saidpost, a tool-slide adjustable laterally on said drill-arm, adrillspindle thereon, a shaft extending lengthwise of said drill-arm foroperating said drillspindle at the various lateral positions of saidtool-slide, raising and lowering 7 means comprising a rotatable elementfor adjusting said drill-arm structure up and down on said column, anelectric motor movable with said drill-arm structure for differentelevations and radial positions of said drill-arm, and drivingconnections between said electric motor and said shaft and saidrotatable element respectively.

3. In a drilling machine, the combination of an upright post, an uprightcolumn rotatable in upright position about said post, a

drill-arm structure including a drill-arm ad justable vup and down onsaid column, means for adjusting said drill-arm structure with saidcolumn about said post, a tool-slide adjustable laterally on saiddrill-arm, a drill spindle thereon, a shaft extending length wise ofsaid drill-arm for operating said drill-spindle at the various lateralpositions of said tool-slide, means comprising a rotatable element foradjusting said raising and, lowering drill-arm structure up and down onsaid column, an electric motor movable with said drill-arm structure fordifferent elevations and radial positions of said drillar1n, and drivingconnections between said electric motor and said shaft and said.rotatable element respectively, said shaft and rotatable element havingtheir axes of rotation at substantial right angles to each 170 devicesby which said shaft may cally on the column, the motor and spindleheadbeing carried by the arm on opposite sides of the column.

In testimony whereof, we have hereunto signed our names in the pnesenceof two'subscribing witnesses.

AUGUSTUS' M. SOSA. j lWitnesses: 1

' ALBERT LL JENNINGS,

ALLEN EDWARDS.

HERMAN w. SOHATZQ

